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Finding the Fourth Proportional to 315,355.20, 473,032.80 and 289,550.40

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Solution

The fourth proportional to 315,355.20, 473,032.80 and 289,550.40 is: 434,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,355.20 : 473,032.80 = 289,550.40 : x
  2. Step 2: Convert to fraction form
    315,355.20/473,032.80 = 289,550.40/x
  3. Step 3: Cross multiply
    315,355.20x = 473,032.80 × 289,550.40
  4. Step 4: Simplify right side
    315,355.20x = 136,966,836,453.12
  5. Step 5: Solve for x
    x = 136,966,836,453.12/315,355.20
  6. Step 6: Final answer
    x = 434,325.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.